Phil, Please let me know how the Ninco Classic style tires work on the heavier car. I installed a pair on a Carrera Corvette I had modified with an inline Slot.it motor pod. This car is pretty heavy with the lead I added. I did find the tires wanted to roll over a bit so I had to glue them on the aluminum wheels. Once they were glued to the wheels I had no other issues. They seemed to hook up pretty well on my flat latex painted MDF routed track. I am very interested in hearing your results! Thank you for posting the feedback!